An asynchronous, nonblocking version of the open call.

C# | Visual Basic | Managed C++ |
IAsyncResult BeginOpen ( GroupID gid, GroupOptions options, AsyncCallback callback, Object context )
Function BeginOpen ( _ gid As GroupID, _ options As GroupOptions, _ callback As AsyncCallback, _ context As Object _ ) As IAsyncResult
IAsyncResult^ BeginOpen ( GroupID gid, GroupOptions options, AsyncCallback^ callback, Object^ context )

- gid (GroupID)
- Identifier of the group. Must be known upfront or obtained through a naming service. In this version of QSM naming services are not provided.
- options (GroupOptions)
- Options that control the way data flows through this attachment point.
- callback (AsyncCallback)
- Callback to be invoked when the reference is ready.
- context (Object)
- Context to pass to the callback.

A reference representing this asynchronous open request.